– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Tue 06 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Tue 06 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Warm (max 21°C on Wed afternoon, min 12°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummaryModerate rain (total 11mm), heaviest on Fri morning. Very mild (max 13°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light. | |||||||||||||||||
Tuesday 6 | Wednesday 7 | Thursday 8 | Friday 9 | Saturday 10 | Sunday 11 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 |  |  | | |  | | |  |  |  |  | |  | | | | | |
clear | some clouds | some clouds | clear | clear | clear | clear | clear | rain shwrs | mod. rain | rain shwrs | light rain | rain shwrs | light rain | rain shwrs | clear | clear | clear | |
Cloud base (m) | 9200 | 6550 | 8200 | 9000 | 9050 | 8950 | 550 | 600 | 700 | 550 | 550 | 850 | 4950 | |||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | — | 0.5 | 6 | 1.1 | 3 | 0.7 | 0.8 | 0.1 | — | — | — |
max °C | 17 | 19 | 15 | 19 | 21 | 16 | 19 | 20 | 14 | 11 | 8 | 7 | 7 | 9 | 7 | 10 | 13 | 9 |
min °C | 13 | 18 | 14 | 15 | 20 | 15 | 15 | 18 | 12 | 9 | 8 | 6 | 6 | 8 | 5 | 6 | 12 | 8 |
chill °C | 13 | 18 | 14 | 15 | 20 | 15 | 15 | 18 | 11 | 7 | 7 | 6 | 6 | 8 | 4 | 5 | 12 | 8 |
Freezing level m | 3800 | 3900 | 4050 | 3950 | 3900 | 4050 | 3900 | 3700 | 3100 | 1900 | 1600 | 1350 | 1400 | 1750 | 1900 | 1950 | 2600 | 3600 |
 | 7:13 | — | — | 7:15 | — | — | 7:16 | — | — | 7:18 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | 6:37 | — | — | 6:35 | — | — | 6:32 | — | — | 6:30 | — | — | 6:29 | — | — | 6:27 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Warm (max 21°C on Wed afternoon, min 12°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Moderate rain (total 11mm), heaviest on Fri morning. Very mild (max 13°C on Sun afternoon, min 5°C on Sat night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table. For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
SHIP4770 | |||||
 | |||||
Bellingham Airport |  | ||||
SHIP2215 | |||||
SHIP8947 | |||||
SHIP2320 | |||||
SHIP1335 | |||||
SHIP3703 |
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.